//
//  Person.m
//  02-ClassAndObject
//
//  Created by dllo on 16/7/5.
//  Copyright © 2016年 dllo. All rights reserved.
//

#import "Person.h"

@implementation Person
// 实现： 方法 加 ｛｝
- (void)sleep:(NSInteger)time{
//   NSLog属于C语言的函数
    NSLog(@"%ld",time);
}

- (void)setName:(NSString *)name{
    if (_name != name) {
        [_name release];
        _name = [name retain];
    }
    
    
}
- (NSString *)name{
    return [[_name retain] autorelease];
}
// 命名规范
// 实现大括号前，要加空格／回车
// 只派初始化方法
// 无论调用哪个初始化方法，都会执行的初始化方法，称为指派初始化方法

- (instancetype)initWithName:(NSString *)name
                         age:(NSInteger)age {
    self = [super init];
    if (self) {
        _name = name;
        _age = age;
    }
    return self;
    
}
- (instancetype)initWithName:(NSString *)name{
    return [self initWithName:name age:0];
}
- (instancetype)initAge:(NSInteger)age{
    return [self initWithName:nil age:age];
}

+ (instancetype)personWithName:(NSString *)name age:(NSInteger)age {
    return [[[Person alloc]initWithName:name age:age] autorelease];
}

@end
